INTERACTIVE MATH TOOL

Provably Fair Verifier: Recompute SHA-256 Commitment, HMAC, and Game Outcomes

Paste a revealed server seed, the earlier commitment, client seed, round id and nonce to recompute the same deterministic outcome locally. Inputs are not sent back to a LINBEI server by this tool.

Formula used

commitment = SHA-256(serverSeedHex text) · outcome = HMAC-SHA256(serverSeedBytes, context)

What this tool calculates

Verify replayable LINBEI RNG locally in your browser: recompute the SHA-256 commitment, HMAC-SHA256 context, and deterministic Dice, Limbo, Plinko, Mines, Keno, or Tower outcome.